diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb8ce0c..9b0e53f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,15 @@
 # Change Log
 ### All notable changes to `COMMIT` will be documented in this file.
 
+## `v2.4.2`<br>_2025-10-06_
+
+### 🐛Fixed
+- Error when checking the number of streamlines in the weighted LASSO function
+- Error in verifying voxel correspondence between the lesion mask passed through the dictionary and the ISO weights map
+
+---
+---
+
 ## `v2.4.1`<br>_2025-09-18_
 
 ### 🛠️Changed
diff --git a/commit/core.pyx b/commit/core.pyx
index 20f12d6..e0754ed 100644
--- a/commit/core.pyx
+++ b/commit/core.pyx
@@ -796,10 +796,10 @@ cdef class Evaluation :
         if self.A is None :
             logger.error( 'Operator not built; call "build_operator()" first' )
 
-        if self.DICTIONARY['IC']['nF'] <= 0 :
+        if self.DICTIONARY['IC']['nSTR'] <= 0 :
             logger.error( 'No streamline found in the dictionary; check your data' )
 
-        if int( self.DICTIONARY['nV'] * self.KERNELS['iso'].shape[0] ) == 0 :
+        if int( self.DICTIONARY['ISO']['n'] * self.KERNELS['iso'].shape[0] ) == 0 :
             logger.error( 'Unable to set regularisation because no isotropic compartment found in the dictionary.' )
 
         # load image and check it
@@ -827,7 +827,8 @@ cdef class Evaluation :
 
         # compute array of weights from image
         array_weights = weights_img[ self.DICTIONARY['MASK_ix'], self.DICTIONARY['MASK_iy'], self.DICTIONARY['MASK_iz'] ].flatten().astype(np.float32)
-        if array_weights.size != self.DICTIONARY['nV']:
+        array_weights = array_weights[self.DICTIONARY['ISO']['vox']]
+        if array_weights.size != self.DICTIONARY['ISO']['n']:
             logger.error( 'Number of voxels in the weights image does not match the number of voxels in the dictionary' )
         if np.any(array_weights < 1):
             logger.error('All weights must be greater or equal to 1')
diff --git a/pyproject.toml b/pyproject.toml
index d5c89d3..7741a0d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "dmri-commit"
-version = "2.4.1"
+version = "2.4.2"
 dependencies = [
     "dmri-amico>=2.0.1",
     "dmri-dicelib>=1.1.0",